Answer
The region that was placed near the Nile river, had promoted the kingdom of Nubia to trade with other countries such as Egypt and the Mediterranean world which had combined these two together.
Step-by-step explanation:
Nubia, an antique area in northeastern Africa, spreading generally from the Nile River valley eastward to the banks of the Red Sea, southward to about Khartoum, and westward to the Libyan Desert. Nubia depended on the Nile River and its yearly floods. Its people used it for agriculture and produced a surplus. The Nubians did not have lots of areas to farm, so they were always anxious to trade for food.